Yes, it represents a nation that upheld several immoral values. Besides, it seems rather pointless, since you're just showing the banner of the losing team. But of course I'm going to think all of these things because I am a Northerner, and am therefore of the belief that the Confederacy can, well, I'm not going to throw insults around, you get my drift. When I see people who actually display that garbage in my home town (it happens once in a blue moon with certain tourists), I feel like laughing. I apologize, since I've been to the South, and there are some people who are quite kind, but I can't respect or express anything but contempt for the Confederacy, though I understand that their reasons for succession were more complicated than just slavery, and that the North was hardly flawless....
Ugh, I could babble on and on about this and create a text wall. Let me conclude by saying that I don't like the Confederacy at all, and therefore I don't like the Confederate flag.